JPH08243337A - Deodorizing device - Google Patents

Abstract

PURPOSE: To obtain a deodorizing device in which heat energy that regenerating air and purge air have is effectively utilized and whose running cost is lowered. CONSTITUTION: An adsorptive rotor 1 consisting of an adsorbent is driven and rotated around its central axis. Air to be treated is passed through the rotor 1 to remove malodorous components in a treating zone 1a. The malodorous components adsorbed by the rotor 1 are desorbed by passing regenerating air through it in a regenerating zone 1c. In a route for circulating and feeding the regenerating air into the generating zone 1c, there are a heat exchanger 5, a heater 7 and a catalyst tank 6. The purified regenerating air of high temperature after passing through the catalyst tank 6 is cooled by the heat exchanger 5, and the heat obtained by the heat exchange is given to the air before passing through the heater 7 to heat it. The purified regenerating air cooled to the necessary minimum temperature for amlodorous component desorption is fed to the regenerating zone 1c to regenerate the rotor 1. The rotor made hot in the regenerating zone 1c is subjected to purge air passing in a purge zone 1b and is cooled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorizing device for removing various malodorous substances, and in particular, a malodorous component is adsorbed by a honeycomb-shaped adsorption rotor to be removed from air to be treated, and the adsorbed malodorous substance is adsorbed. The present invention relates to a deodorizing device that is desorbed from a rotor with regenerating air and decomposes and removes a malodorous component in the regenerating air after regeneration of the adsorption rotor by a catalyst.

[0002]

2. Description of the Related Art For example, a paint used in a coating factory contains an organic solvent, and the organic solvent volatilizes to generate a strong irritating odor during the coating process and the drying process. Adversely affect the human body. For this reason, various deodorizing treatments are carried out in factories using these organic solvents.

Among the conventional deodorizing devices for carrying out these deodorizing treatments, there is a catalytic burning type deodorizing device for decomposing and removing a malodorous component with a catalyst. Further, in this deodorizing device, in order to reduce the running cost in the catalytic combustion process, before the air to be treated (gas to be treated) containing a malodorous component is passed through the catalyst tank, the air to be treated is adsorbed in a honeycomb form in the preceding stage. After concentrating using a rotor, the catalytic combustion method is used to decompose and remove odorous components.

FIG. 4 is a block diagram showing this conventional deodorizing device. The adsorption rotor 51 in which the adsorbent is formed into a honeycomb rotor is continuously driven to rotate, and the rotation passage area of the adsorption rotor 51 is divided into an adsorption treatment zone 51a and a regeneration zone 51b. While the adsorption treatment zone 51a is rotating, the blower 52 allows the air to be treated (gas to be treated) to pass through the adsorption rotor 51 so that the malodorous components in the air to be treated are adsorbed to the adsorption rotor 51 and cleaned after deodorization. The air is discharged from the adsorption rotor 51.

On the other hand, in the regeneration zone 51b, the high temperature (about 120 ° C.) regeneration air heated by the heater 53 is passed through the adsorption rotor 51 at a volume smaller than the treated volume.
The odorous substance adsorbed on the adsorption rotor 51 is adsorbed on the adsorption rotor 5.
Detach from 1. The regeneration air after regeneration of the adsorption rotor contains a malodorous component at a high concentration and, after passing through the heat exchanger 54, is heated by the heater 55 and introduced into the catalyst tank 56. The catalyst tank 56 is filled with an oxidation catalyst, and the bad odor component in the air after regeneration at a high temperature (about 300 ° C.) heated by the heater 55 causes a decomposition reaction in the catalyst tank 56 by the action of the catalyst. Since this decomposition reaction is an exothermic reaction,
Cleaned air (clean gas) leaving the catalyst tank 56 is about 3
The temperature of the cleaned air, which has risen to 30 ° C., is exchanged with heat in the heat exchanger 54, and the retained heat is given to the air after regeneration of the adsorption rotor passing through the catalyst tank 56. After that, it is discharged.

As described above, in the deodorizing device equipped with the adsorption rotor 51, the air to be treated (gas to be treated) is concentrated by the adsorption rotor 51, and then the air containing the malodorous component after regeneration of the adsorption rotor is introduced into the catalyst tank 56. However, since the malodorous substance is decomposed and removed, the air volume of the air containing the malodorous component to be introduced into the catalyst tank 56 can be reduced as compared with the case where the air to be treated is directly introduced into the catalyst tank 56. That is, it is possible to reduce the amount of air to be treated that is to be decomposed in the catalyst tank 56. For this reason, this deodorizing device can reduce the heating energy required for catalytic combustion as compared with the case where the air to be treated is directly introduced into the catalyst tank.

In addition, the temperature of the air introduced into the catalyst tank 56 after regeneration of the adsorption rotor is about 300 because of catalytic combustion efficiency.
It is necessary that the temperature is higher than or equal to ℃, but in the above-mentioned conventional deodorizing device, high temperature clean air (about 3
30 ° C.) is passed through the heat exchanger 54 and the retained heat is transferred to the catalyst tank 5
It is used to heat the air after regeneration of the adsorption rotor introduced in No. 6.

[0008]

However, in the above conventional deodorizing device, the heater 53 used for heating the regeneration air supplied to the regeneration zone 51b and the heating of the air after regeneration of the adsorption rotor introduced into the catalyst tank 56 are used. Heater 5 used for
Two heaters, 5 and 5, are required. In this conventional device, the exhaust heat of the combustion catalyst device (catalyst tank 56) is used by the heat exchanger 54, but since the heat exchange by the heat exchanger 54 is performed between the gases, the heat exchange rate is bad. Therefore, in order to fully utilize the retained heat of the clean air from the catalyst tank 56, it is necessary to enlarge the heat exchanger 54 to increase the heat transfer area. However, even if the heat transfer area is increased, the heat exchange efficiency is at most 50 to 60%, and the rest of the heat is discarded as high temperature gas to the outside. For this reason, the conventional deodorizing device has a problem that the running cost is high because the heat retained by the purified air after the catalytic combustion cannot be effectively utilized.

The present invention has been made in view of the above problems, and it is possible to effectively use the thermal energy of the regenerating air and the purge air, and to reduce the running cost of the deodorizing process. An object is to provide a deodorizing device.

[0010]

In order to achieve the above object, the deodorizing apparatus according to the invention of claim 1 mainly uses an adsorbent in a deodorizing apparatus for deodorizing by decomposing and removing a malodorous component with a catalyst. Honeycomb-shaped adsorption rotor configured as a component, drive means for rotationally driving the adsorption rotor around its central axis, and the rotation passage area of the adsorption rotor is divided into an adsorption treatment zone, a regeneration zone and a purge zone in this order. Dividing means, a treated air introducing means for allowing treated air to be deodorized in the adsorption treatment zone to pass through the adsorption rotor, and a regeneration air supply means for circulating and supplying regeneration air to the regeneration zone, Purge air introducing means for allowing purge air to pass through the purge zone in a direction opposite to the regeneration air passage direction, and the regeneration air provided in a circulation path of the regeneration air. Heating means for heating the reproducing air containing the malodorous component after passing through the heater, and the heated reproducing air containing the malodorous component after passing through the heating means is introduced in the circulation path of the reproducing air, A catalyst tank that stores a catalyst for decomposing malodorous components and a clean regeneration air that has been provided in the circulation path of the regeneration air and has passed through the catalyst tank are heat-exchanged to lower the temperature and lead to the regeneration zone. A heat exchanger for giving the heat obtained by the heat exchange to the regenerating air before passing through the heating means to raise the temperature, and after passing through the purge zone to the regeneration zone outlet side in the circulation path of the regenerating air. While introducing the air, the amount of regeneration air corresponding to the introduced air is introduced from the regeneration zone inlet side in the circulation path of the regeneration air to the inlet side of the adsorption treatment zone and merged with the air to be treated. Characterized by comprising a means.

A deodorizing apparatus according to a second aspect of the invention is the deodorizing apparatus according to the first aspect of the invention, characterized in that the adsorbent contains hydrophobic zeolite as a main component.

A deodorizing apparatus according to a third aspect of the present invention is the deodorizing apparatus according to the first or second aspect, wherein the catalyst for decomposing malodorous components is at least selected from iron, manganese, copper, zinc and nickel. It is characterized by being an oxidation catalyst consisting of one kind.

A deodorizing apparatus according to a fourth aspect of the present invention is the deodorizing apparatus according to the first or second aspect, wherein the catalyst for decomposing a malodorous component is at least selected from platinum, palladium, gold, rhodium and silver. It is a noble metal catalyst consisting of one kind.

[0014]

In the deodorizing apparatus according to the present invention, the honeycomb-shaped adsorption rotor mainly composed of the adsorbent is driven to rotate about its central axis, and the adsorption treatment zone, the regeneration zone and the purge zone are rotated by one rotation. Pass in this order.
The air to be treated to be deodorized is passed through the adsorption rotor in the adsorption treatment zone so that its malodorous components are adsorbed by the adsorption rotor, and as a result, purified air is discharged to the outside.

Next, the adsorption rotor that has adsorbed the malodorous component receives passage of high-temperature regeneration air in the regeneration zone, and the malodorous component is heated by the regeneration air and desorbed from the adsorption rotor. The regeneration air is circulated and supplied to the regeneration zone by the regeneration air supply means, and a heat exchanger, a heating means, and a catalyst tank are provided in the circulation path of the regeneration air. Then, the regenerating air containing the malodorous component desorbed from the adsorption rotor is guided to the heating means via the heat exchanger,
After being heated to, for example, about 350 ° C. by the heating means, the malodorous component is oxidatively decomposed by the catalyst by passing through the catalyst tank at a high temperature.

[0016] Then, the heat exchanger exchanges the purified regenerated air, which has passed through the catalyst tank and has a high temperature of, for example, about 400 ° C, with which the temperature is lowered to, for example, about 200 ° C and is obtained by the heat exchange. The heat is applied to the air before passing through the heating means to raise the temperature. Then, clean regeneration air cooled to the minimum necessary temperature (about 200 ° C.) for desorbing the malodorous component from the adsorption rotor is supplied to the regeneration zone to regenerate the adsorption rotor as described above. It will be.

Next, the adsorption rotor, which has reached a high temperature in the regeneration zone, is cooled by the passage of clean purge air in the purge zone. As a result, the adsorption rotor recovers its ability to adsorb malodorous components and is subjected to the next deodorizing treatment in the adsorption treatment zone.

In this way, the circulation path of the regeneration air is provided, and the air containing the malodorous component desorbed from the adsorption rotor in the regeneration zone is heated by the heating means and introduced into the catalyst tank, where it is cleaned. By supplying the air to the regeneration zone again and using it as regeneration air, and by providing a heat exchanger in this circulation path, the purified air after passing through the catalyst tank is heat-exchanged, and the odor from the adsorption rotor is removed. The regeneration air cooled to the minimum necessary temperature for desorbing the components is supplied to the regeneration zone, and the heat obtained by the heat exchange is applied to the air before passing through the heating means to raise the temperature. As a result, the heat stored in the regenerating air by the heating means and the heat generated by the catalytic combustion in the catalyst tank are
For example, about 90% can be reused without discarding it to the outside. Also, when recovering the heat from the purge air that has passed through the purge zone where the heat of the adsorption rotor is transferred, the cooling purge air should be passed in the opposite direction to the high temperature regeneration air in the adsorption rotor. Because I chose
Compared with the case of passing in the same direction, the temperature of the purge air after passing through the purge zone becomes about 1.1 to 3.5 times higher, and as a result, this purge air becomes regeneration air after passing through the adsorption rotor. The temperature of the combined air also becomes high, and the heating energy by the heating means for catalytic combustion can be reduced. In this way, the thermal energy of the regenerating air and the purge air can be effectively used, and the running cost of the deodorizing process can be reduced.

In addition, since the purge air is made to pass in the opposite direction in the adsorption rotor with respect to the passage direction of the regeneration air, it is possible to make the temperature of the purge air after passing through the purge zone the same direction. The reason for the increase in comparison is due to the following reasons. If high-temperature regeneration air is passed through the adsorption rotor in the regeneration zone, the temperature distribution inside the adsorption rotor will not be uniform in the rotor axial direction, and the regeneration air inlet side portion of the adsorption rotor will be closer to the outlet side portion. The temperature is higher than that. For this reason, when the passing directions are the same, the heat obtained in the high temperature portion inside the adsorption rotor is taken away by the low temperature portion due to the passage of the purge air, and the amount of heat is reduced, while the air is passed in the opposite direction. This is because in the case of the configuration, the heat obtained in the high temperature portion is retained in the purge air as it is.

In the deodorizing apparatus according to the present invention, it is preferable to use hydrophobic zeolite as the adsorbent which constitutes the honeycomb adsorption rotor. The adsorption rotor containing the hydrophobic zeolite as a main component can obtain sufficient durability without changing its component or decreasing in performance even when high-temperature regeneration air passes through. In addition,
Other adsorbents include activated carbon.

In the deodorizing apparatus according to the present invention, as a catalyst for decomposing a malodorous component, an oxidation catalyst composed of at least one selected from iron, manganese, copper, zinc and nickel, and platinum, palladium, gold and rhodium. And a noble metal catalyst composed of at least one selected from silver. Whichever is used, almost the same action and effect are exhibited, but platinum is particularly preferable from the viewpoint of durability and the highest oxidation activity among the noble metal catalysts.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a deodorizing device according to an embodiment of the present invention. In the present embodiment, the honeycomb-shaped adsorption rotor 1 has a columnar shape and is rotatably supported around its central axis. This adsorption rotor 1
Is rotatively driven in one direction by an appropriate drive means such as a rubber belt having a motor as a drive source. The front and back surfaces of the adsorption rotor 1 face a room divided into three fan-shaped parts centering on the rotor center axis by partition plates (dividing means), and these three zones are adsorbed as shown in FIG. It comprises a processing zone 1a, a purge zone 1b and a regeneration zone 1c.

Then, only the air to be treated can be passed in the thickness direction of the adsorption rotor 1 in the adsorption treatment zone 1a, and only the regeneration air is passed in the thickness direction of the adsorption rotor 1 in the regeneration zone 1c. Further, only the purge air can be passed in the purge zone 1b in the thickness direction of the adsorption rotor 1. In this embodiment, the adsorption treatment zone 1a and the purge zone 1b
And the reproduction zone 1c have a central angle of 285, respectively.
It has widths of °, 30 ° and 45 °. In this embodiment, the adsorption rotor 1 is composed of an adsorbent whose main component is hydrophobic zeolite.

The air to be treated to be deodorized is filtered by the filter 2
After the dust is removed by, the dust is introduced into the adsorption processing zone 1a of the adsorption rotor 1 through the first conduit L1. The air to be treated is sent to the adsorption rotor 1 by the blower 3 provided in the first conduit L1. The air exiting the adsorption treatment zone 1a is discharged to the outside via the second conduit L2. Blower 3
Configures the air to be treated introducing means.

A part of the odorless air after the deodorizing process discharged to the second pipe line L2 is introduced into the purge zone 1b of the adsorption rotor 1 as the purge air for cooling through the third pipe line L3. . Here, the purge air for cooling passes in the opposite direction in the adsorption rotor 1 with respect to the high temperature regeneration air.

On the other hand, the regeneration air is circulated in the regeneration zone 1c of the adsorption rotor 1 through the fourth conduit L4, and is regenerated by being driven by the blower 4 provided in the fourth conduit L4. Air for regeneration is the regeneration zone 1c of the adsorption rotor 1.
Circulated to. Regeneration zone 1c of this fourth conduit L4
A heat exchanger 5 is arranged on the upstream side, a catalyst tank 6 storing a catalyst for decomposing malodorous components is arranged on the upstream side thereof, and further on the upstream side as a heating means for heating regeneration air. A heater 7 is provided. The regeneration air is heated to about 350 ° C. by the heater 7, passes through the catalyst tank 6, exchanges heat with the heat exchanger 5, and is introduced into the regeneration zone 1 c of the adsorption rotor 1.

In this embodiment, the catalyst for decomposing malodorous components is Fe: 30 to 50% by weight and Mn: 15 to 30% by weight.
And are the main components. And the purge zone 1
The outlet side b and the outlet side of the regeneration zone 1c are connected by a fifth conduit L5, and the inlet side of the regeneration zone 1c and the first side.
The inlet side (upstream side) of the blower 3 provided in the pipeline L1 is connected by the sixth pipeline L6. The fifth pipeline L5 and the sixth pipeline L6 introduce the air after passing through the purge zone 1b to the outlet side of the regeneration zone 1c in the circulation path of the regeneration air, and regenerate the amount of the air corresponding to the introduced air. Adsorption treatment zone 1 from the inlet side of air regeneration zone 1c
A means for guiding the air to the inlet side of a and joining it with the air to be treated is configured. The blower 4 constitutes a regeneration air supply means and a purge air introduction means.

Next, the operation of the deodorizing device thus constructed will be described. The air to be treated containing the malodorous component is sent to the adsorption treatment zone 1a of the adsorption rotor 1, and the malodorous component is adsorbed and removed by the adsorption rotor 1. The air that has passed through the adsorption treatment zone 1a becomes purified air and is discharged to the outside.

The adsorption rotor 1 that has adsorbed the malodorous component then rotates to the regeneration zone 1c. This playback zone 1c
At this time, the adsorption rotor 1 receives the flow of the high-temperature regeneration air circulating in the circulation path (the fourth pipe line L4), and the malodorous component adsorbed to the adsorption rotor 1 is heated by the regeneration air. It is desorbed from the adsorption rotor 1. Then, the regenerating air containing the malodorous component desorbed from the adsorption rotor 1 passes through the fourth conduit L4.
Is introduced into the heater 7 through the heat exchanger 5 and is heated to about 350 ° C. by the heater 7. When this regenerating air passes through the catalyst tank 6 at a high temperature, the malodorous component is oxidatively decomposed by the catalyst. This catalytic decomposition reaction is an exothermic reaction, and the temperature of the regeneration air purified by passing through the catalyst tank 6 is raised to about 400 ° C. By passing this regeneration air through the heat exchanger 5, the adsorption rotor The temperature is lowered to the minimum temperature required for regeneration of No. 1 (about 200 ° C. in this example). Further, the heat obtained by the heat exchange is given to the regeneration air before passing through the heater 7 by the heat exchanger 5 and used for heating the regeneration air. Then, the adsorption rotor 1 is regenerated by the clean regeneration air of about 200 ° C. which has passed through the heat exchanger 5.

Next, the adsorption rotor 1 having a high temperature in the regeneration zone 1c rotates to the purge zone 1b. Then, the adsorption rotor 1 is cooled in the purge zone 1b by the passage of the clean air (purge air) after the adsorption processing sent through the third pipe line L3. As a result, the adsorption rotor 1 recovers its ability to adsorb malodorous components, and is subjected to the next deodorizing treatment in the adsorption treatment zone 1a.

In this embodiment, the purged air is not directly discharged to the outside air but is recovered from the purged air to which the heat of the adsorption rotor 1 is transferred.
It is introduced into the circulation path of the regeneration air (the fourth pipeline L4) via the fifth pipeline L5. In this case, since the purge air for cooling is made to pass in the opposite direction in the adsorption rotor 1 with respect to the high temperature regeneration air, the purge air after passing through the purge zone is compared with the case where it is passed in the same direction. Is about 1.1 to 3.5 times higher, and as a result, the temperature of the air obtained by merging the purge air with the regeneration air after passing through the adsorption rotor is also increased, which causes the catalyst combustion. The heating energy by the heater 7 can be reduced. Then, almost the same amount of regeneration air as the purged air introduced into the fourth pipeline L4 is extracted from the fourth pipeline L4 at the inlet side of the regeneration zone 1c and passed through the sixth pipeline L6. Blower 3
It is returned to the upstream side of and is merged with the air to be treated before the malodor treatment. The reason why the air extracted from the fourth conduit L4 is returned to the first conduit L1 is that the extracted regeneration air contains a small amount of undecomposed malodorous gas.

As described above, the circulation path for the regeneration air is provided, and the air containing the malodorous component desorbed from the adsorption rotor 1 in the regeneration zone 1c is heated by the heater 7 and guided to the catalyst tank 6 to be fed to the catalyst tank 6. Clean and clean air again in Zone 1
The catalyst tank 6 is provided by supplying it to c for use as regeneration air, and by providing the heat exchanger 5 in this circulation path.
The purified air after passing through it is heat-exchanged, and the regeneration air cooled to the minimum necessary temperature for desorbing the malodorous components from the adsorption rotor 1 is supplied to the regeneration zone 1c and obtained by the heat exchange. Since the generated heat is given to the air before passing through the heater 7 to raise the temperature thereof, the heat retained in the regenerating air by the heater 7 and the heat generated by the catalytic combustion in the catalyst tank 6 are transferred to the outside. For example, about 90% can be reused without discarding. In recovering the heat from the purge air after passing through the purge zone 1b where the heat of the adsorption rotor 1 is transferred, the cooling purge air is moved in the opposite direction to the high temperature regeneration air in the adsorption rotor 1. Since it is made to pass, the temperature of the purge air after passing through the purge zone 1b becomes higher than that in the case of passing in the same direction, and as a result, this purge air joins the regeneration air after passing through the adsorption rotor 1. The temperature of the generated air also rises, which can reduce the heating energy by the heater 7 for catalytic combustion. In this way, the thermal energy of the regeneration air or the purge air can be effectively used, and the running cost of the deodorizing process can be reduced as compared with the conventional device.

FIG. 2 is a block diagram showing a deodorizing device according to another embodiment of the present invention. Second purge zone 1b ″
1 is the same as the embodiment of FIG. 1 except for the point that the same reference numerals are provided, the same components as those in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted. In addition, both the first purge zone 1b ′ and the second purge zone 1b ″ are
The flow of the purge air passing through the inside of the adsorption rotor 1 is configured to be in the same direction.

In this embodiment, the first purge zone 1
A second purge zone 1b ″ is provided between b ′ and the adsorption treatment zone 1a. The second purge zone 1b ″ is provided with a seventh pipe line L7 branched from the third pipe line L3. The deodorized clean air is passed as purge air in the same direction as the first purge zone 1b '. The purged air that has passed through the second purge zone 1b ″ is guided to the sixth pipeline L6 through the eighth pipeline L8 and returned to the upstream side of the adsorption treatment zone 1a.

In this embodiment, the rotor portion heated by passing through the regeneration zone 1c has a first purge zone 1b '.
After being cooled in the second purge zone 1b ″, it is further cooled by receiving the purge air in the second purge zone 1b ″.

In the first purge zone 1b ', the passing air volume needs to be substantially the same as the air volume of the air extracted from the circulation path of the regenerating air, so that the cooling by the first purge zone 1b' is possible. Has restrictions. On the other hand, in the second purge zone 1b ″, there is no restriction on the passing air volume, and the adsorption rotor 1 can be sufficiently cooled in the second purge zone 1b ″.

In the embodiment of FIG. 1 described above, the purge portion may not be sufficiently cooled due to the relationship between each air volume and the adsorbing rotor rotation speed under the optimum conditions. On the other hand, according to the present embodiment, in addition to the effect of the embodiment of FIG. 1, it is possible to increase the cooling air volume (purge air volume) without increasing the air volume in the circulation path of the regeneration air. By sufficiently cooling the adsorption rotor, the adsorption effect can be maintained high.

FIG. 3 is a block diagram showing a deodorizing device according to still another embodiment of the present invention. First purge zone 1
2 is the same as the embodiment of FIG. 2 except that the flow of purge air between b'and the second purge zone 1b "is in opposite directions. In this embodiment, the second purge zone 1b is used. '', The clean air after the deodorizing process is passed as purge air in the direction opposite to the first purge zone 1b 'through the seventh conduit L7'. In addition, the air after the purge that has passed through the second purge zone 1b ″ is supplied to the eighth pipeline L
It is led to the sixth conduit L6 via 8 and returned to the upstream side of the adsorption treatment zone 1a. Also in the deodorizing device thus configured, the same effect as that of the embodiment of FIG. 2 can be obtained.

[0039]

As described above, according to the deodorizing device of the present invention, a circulation path for regeneration air is provided, and the air containing the malodorous component desorbed from the adsorption rotor in the regeneration zone is heated by the heating means. The air introduced to the catalyst tank is supplied to the regeneration zone again without being discarded and the air cleaned is reused as regeneration air. Moreover, a heat exchanger is installed in this circulation path to clean the air after passing through the catalyst tank. The converted air is heat-exchanged, and the air cooled to the minimum necessary temperature for desorbing the malodorous component from the adsorption rotor is supplied as regeneration air, and the heat obtained by the heat exchange is used as the heating means. Since it is provided to the air before passing to raise the temperature, the heat retained in the regenerating air by the heating means and the heat generated by the catalytic combustion in the catalyst tank are discarded to the outside. And not be able to reuse the most. Further, since the purge air for cooling is made to pass in the opposite direction in the adsorption rotor with respect to the high temperature regeneration air, the purge air after passing through the purge zone where the heat of the adsorption rotor is transferred is removed from the purge air. A large amount of the heat can be recovered, and thus the heating energy by the heating means for catalytic combustion can be reduced. As a result, the thermal energy of the regeneration air and the purge air can be effectively used, and the running cost of the deodorizing process can be reduced as compared with the conventional device.

[Brief description of drawings]

FIG. 1 is a block diagram showing a deodorizing device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a deodorizing device according to another embodiment of the present invention.

FIG. 3 is a block diagram showing a deodorizing device according to still another embodiment of the present invention.

FIG. 4 is a block diagram showing a conventional deodorizing device.

[Explanation of symbols]

1 ... Adsorption rotor 1a ... Adsorption treatment zone 1b ... Purge zone 1c ... Regeneration zone 1b '... First purge zone 1b "... Second purge zone 2 ... Filter 3,
4 ... Blower 5 ... Heat Exchanger 6 ... Catalyst Tank 7 ... Heater
L1 to L8, L7 '... Pipe line

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location B01J 23/42 B01J 23/84 311A 23/889

Claims (4)

[Claims] 1. A deodorizing device for deodorizing a odorous component by decomposing and removing it with a catalyst, and a honeycomb-shaped adsorption rotor mainly composed of an adsorbent, and rotating the adsorption rotor around its central axis. Driving means, dividing means for dividing the rotation passage area of the adsorption rotor into an adsorption treatment zone, a regeneration zone and a purge zone in this order, and the air to be deodorized in the adsorption treatment zone passes through the adsorption rotor. To be treated air introduction means, regeneration air supply means for circulating and supplying regeneration air to the regeneration zone, and purge air introduction means for allowing purge air to pass through the purge zone in a direction opposite to the regeneration air passage direction. A heating means provided in the circulation path of the regeneration air for heating the regeneration air containing the malodorous component after passing through the regeneration zone; The heating regeneration air containing the malodorous component after passing through the heating means is introduced in the circulation path, and the catalyst tank storing the catalyst for decomposing the malodorous component is provided in the circulation path of the regeneration air. The purified regenerating air after passing through the catalyst tank is heat-exchanged to lower the temperature and guide it to the regeneration zone, and the heat obtained by the heat exchange is given to the regenerating air before passing through the heating means. The heat exchanger for raising the temperature and the air after passing through the purge zone are introduced to the exit side of the regeneration zone in the circulation path of the regeneration air, and an amount of regeneration air corresponding to the introduced air is used for the regeneration. A deodorizing device comprising: means for guiding the air from the inlet side of the regeneration zone to the inlet side of the adsorption treatment zone to join the air to be treated. 2. The deodorizing device according to claim 1, wherein the adsorbent contains hydrophobic zeolite as a main component. 3. The deodorizing device according to claim 1, wherein the catalyst for decomposing a malodorous component is an oxidation catalyst composed of at least one selected from iron, manganese, copper, zinc and nickel. . 4. The catalyst for decomposing a malodorous component is at least one selected from platinum, palladium, gold, rhodium and silver.
A precious metal catalyst comprising a seed.
Or the deodorizing device according to 2.